Bismuth magnetic susceptibility

A bismuth ball of radius / = 1 cm is in a uniform magnetic field with B = 0.5 T. Determine the magnetic moment of the ball acquired by it if the bismuth magnetic susceptibility xis -1.5 X lO. ... 

There are several fundamental experiments on the magnetic properties of materials that become possible as a result of the low-temperature environment of cryogenics. The first of these was discovered by deHaas and Van Alphen in 1930. They found that at low temperatures, the susceptibility of bismuth single crystals rose and fell periodically as the magnetic field was increased. Later work shows that the periodicity occurs in all metals at low temperatures and is the result of quantization of electron motion perpendicularly to the applied field. This effect was used to determine the Fermi surface of metals. 

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